Based on the thin octagonal GA-2100, the GA2100CA-8A is The perfect watch for anywhere from the wild outdoors to the inner city. It features 200M water resistance, carbon case, and a mineral glass face. An original G-Shock Camo motif on the dial completes the design. Measures 48.5mm x 45.4mm x 11.8mm. Because it's a G-Shock, it is shock resistant and built to last a lifetime.